Last change
on this file since 445 was 444, checked in by coas-nagasima, 4 years ago |
muslのソースコードを追加
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Property svn:eol-style
set to
native
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Property svn:mime-type
set to
text/x-csrc;charset=UTF-8
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File size:
801 bytes
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1 | #include <wchar.h>
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2 |
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3 | size_t wcsnrtombs(char *restrict dst, const wchar_t **restrict wcs, size_t wn, size_t n, mbstate_t *restrict st)
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4 | {
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5 | size_t l, cnt=0, n2;
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6 | char *s, buf[256];
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7 | const wchar_t *ws = *wcs;
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8 | const wchar_t *tmp_ws;
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9 |
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10 | if (!dst) s = buf, n = sizeof buf;
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11 | else s = dst;
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12 |
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13 | while ( ws && n && ( (n2=wn)>=n || n2>32 ) ) {
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14 | if (n2>=n) n2=n;
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15 | tmp_ws = ws;
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16 | l = wcsrtombs(s, &ws, n2, 0);
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17 | if (!(l+1)) {
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18 | cnt = l;
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19 | n = 0;
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20 | break;
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21 | }
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22 | if (s != buf) {
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23 | s += l;
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24 | n -= l;
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25 | }
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26 | wn = ws ? wn - (ws - tmp_ws) : 0;
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27 | cnt += l;
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28 | }
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29 | if (ws) while (n && wn) {
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30 | l = wcrtomb(s, *ws, 0);
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31 | if ((l+1)<=1) {
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32 | if (!l) ws = 0;
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33 | else cnt = l;
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34 | break;
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35 | }
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36 | ws++; wn--;
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37 | /* safe - this loop runs fewer than sizeof(buf) times */
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38 | s+=l; n-=l;
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39 | cnt += l;
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40 | }
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41 | if (dst) *wcs = ws;
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42 | return cnt;
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43 | }
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